What energy can we hear, caused by vibrations?

• A. Sound Energy
• B. Pitch
• C. Light Energy
• D. Absorb

Answer: (A)

Sound energy is the energy produced when objects vibrate. When something vibrates, it creates pressure waves in a surrounding medium like air, and these waves carry energy through the air to our ears. Our ears translate those vibrations into nerve signals, which is how we perceive sound. This is the best choice because pitch describes how high or low the vibration is (the frequency), not the energy itself; light energy involves electromagnetic waves we can see, not audible vibrations; and “absorb” isn’t a type of energy at all. A vibrating object transfers energy to the air as sound waves, which is what we hear.